Hello99:
You are correct that the age gap concept primarly is a help going forward.
However, there is a trickle up effect as well. If 25 year old boys marry 24 year old girls girls. Then the 28 year old boys will more likely marry close to their age and not the 24 year olds
Mentors are definitely a help for many individuals it just doesn’t solve the macro, it helps the micre but EVERY single person it helps it a entire universe.